Construction

True Position Calculator

Find the true position deviation diameter.

Parameters Live Compute
Calculated Output
True position (mm dia.) 0.3606
Formula: TP = 2 × √(Δx² + Δy²)
Step-by-Step Breakdown
1. Values used:
2. X deviation = 0.1
3. Y deviation = 0.15
4.
5. True position = 0.3606mm dia.
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True position measures the diameter of the error circle from a target location.

The math behind it

TP = 2 × √(X deviation² + Y deviation²). The result is a diameter — compare it with the tolerance on the print.

Worked Example

x 0.1, y 0.15 → TP 0.36 mm dia.

Frequently Asked Questions

In tolerance?

Passes if the true position is ≤ the tolerance diameter.

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